style: YYUSE is private, make it YY_USE

This macro is not exposed to users, make start it with 'YY_'.

* data/skeletons/bison.m4, data/skeletons/c.m4, data/skeletons/glr.c,
* data/skeletons/glr.cc, data/skeletons/lalr1.cc,
* src/parse-gram.c, tests/actions.at, tests/c++.at, tests/headers.at,
* tests/local.at (YYUSE): Rename as...
(YY_USE): this.

4 files changed, 11 insertions, 11 deletions

diff --git a/tests/actions.at b/tests/actions.at
index d90851de..da11ceb2 100644
--- a/tests/actions.at
+++ b/tests/actions.at
@@ -334,10 +334,10 @@ exp: { ]AT_CXX_IF([[std::cerr << @$ << '\n']],
 
 ]AT_YYLEX_PROTOTYPE[
 {]AT_PURE_IF([
-  YYUSE(lvalp);
-  YYUSE(llocp);], [AT_CXX_IF([
-  YYUSE(lvalp);
-  YYUSE(llocp);])])[
+  YY_USE(lvalp);
+  YY_USE(llocp);], [AT_CXX_IF([
+  YY_USE(lvalp);
+  YY_USE(llocp);])])[
   return 'x';
 }
 
diff --git a/tests/c++.at b/tests/c++.at
index 949bdeb6..b894c0f7 100644
--- a/tests/c++.at
+++ b/tests/c++.at
@@ -1232,10 +1232,10 @@ list:
 
 item:
   'a'     { $$ = $][1; }
-| 'e'     { YYUSE ($$); YYUSE ($][1); error ("syntax error"); }
+| 'e'     { YY_USE ($$); YY_USE ($][1); error ("syntax error"); }
 // Not just 'E', otherwise we reduce when 'E' is the lookahead, and
 // then the stack is emptied, defeating the point of the test.
-| 'E' 'a' { YYUSE ($][1); $$ = $][2; }
+| 'E' 'a' { YY_USE ($][1); $$ = $][2; }
 | 'R'     { ]AT_VARIANT_IF([], [$$ = YY_NULLPTR; delete $][1]; )[YYERROR; }
 | 'p'     { $$ = $][1; }
 | 's'     { $$ = $][1; throw std::runtime_error ("reduction"); }
@@ -1394,7 +1394,7 @@ int yylex (yy::parser::semantic_type *lvalp)
   // Note: this argument is unused, but named on purpose.  There used to be a
   // bug with a macro that erroneously expanded this identifier to
   // yystackp->yyval.
-  YYUSE (lvalp);
+  YY_USE (lvalp);
   return yy::parser::token::ZERO;
 }
 
diff --git a/tests/headers.at b/tests/headers.at
index 73a43454..4e745ccb 100644
--- a/tests/headers.at
+++ b/tests/headers.at
@@ -340,7 +340,7 @@ AT_PERL_CHECK([[-n -0777 -e '
       |YYNTOKENS  # This is actual scoped in a C++ class.
       |YYPUSH_MORE(?:_DEFINED)?
       |S_(YY(ACCEPT|EMPTY|EOF|error|UNDEF))  # These guys are scoped.
-      |YYUSE
+      |YY_USE
       |YY_ATTRIBUTE(?:_PURE|_UNUSED)
       |YY(?:_REINTERPRET)?_CAST
       |YY_CONSTEXPR
diff --git a/tests/local.at b/tests/local.at
index 91e1e734..c697f5a7 100644
--- a/tests/local.at
+++ b/tests/local.at
@@ -643,7 +643,7 @@ yyreport_syntax_error (const yypcontext_t *ctx]AT_PARAM_IF([, AT_PARSE_PARAMS])[
 {
   int res = 0;]AT_PARAM_IF([m4_bpatsubst(m4_defn([AT_PARSE_PARAMS]),
               [[^,]+[^A-Za-z_0-9]\([A-Za-z_][A-Za-z_0-9]*\),* *], [
-  YYUSE (\1);])])[]m4_bmatch(m4_defn([AT_PARSE_PARAMS]), [nerrs],[[
+  YY_USE (\1);])])[]m4_bmatch(m4_defn([AT_PARSE_PARAMS]), [nerrs],[[
   ++global_nerrs;
   ++*nerrs;]])[]AT_LOCATION_IF([[
   LOCATION_PRINT (stderr, *yypcontext_location (ctx));
@@ -679,7 +679,7 @@ static
 ]AT_YYERROR_PROTOTYPE[
 {]m4_bpatsubst(m4_defn([AT_PARSE_PARAMS]),
               [[^,]+[^A-Za-z_0-9]\([A-Za-z_][A-Za-z_0-9]*\),* *], [
-  YYUSE (\1);])dnl
+  YY_USE (\1);])dnl
 AT_YYERROR_SEES_LOC_IF([[
   LOCATION_PRINT (stderr, ]AT_LOC[);
   fprintf (stderr, ": ");]])[
@@ -760,7 +760,7 @@ void
 ]AT_NAMESPACE[::parser::report_syntax_error (const context& ctx) const
 {]AT_PARAM_IF([m4_bpatsubst(m4_defn([AT_PARSE_PARAMS]),
               [[^,]+[^A-Za-z_0-9]\([A-Za-z_][A-Za-z_0-9]*\),* *], [
-  YYUSE (\1);])])[]m4_bmatch(m4_defn([AT_PARSE_PARAMS]), [nerrs],[[
+  YY_USE (\1);])])[]m4_bmatch(m4_defn([AT_PARSE_PARAMS]), [nerrs],[[
   ++global_nerrs;
   ++*nerrs;]])[]AT_LOCATION_IF([[
   std::cerr << ctx.location () << ": ";]])[